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Finding the Fourth Proportional to 216,463.45, 298,526.15 and 135,898.48

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Solution

The fourth proportional to 216,463.45, 298,526.15 and 135,898.48 is: 187,418.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,463.45 : 298,526.15 = 135,898.48 : x
  2. Step 2: Convert to fraction form
    216,463.45/298,526.15 = 135,898.48/x
  3. Step 3: Cross multiply
    216,463.45x = 298,526.15 × 135,898.48
  4. Step 4: Simplify right side
    216,463.45x = 40,569,249,345.76
  5. Step 5: Solve for x
    x = 40,569,249,345.76/216,463.45
  6. Step 6: Final answer
    x = 187,418.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.